Dual socket, bolt-holding type wrench



y 3, 1956 A. H. LEHMANN DUAL SOCKET, BOLT-HOLDING TYPE WRENCH Filed Aug. 30, 1955 R m m m Alfred/ 10 12220101 BY FIG 8 M l lzzo neg lliinite 3 Claims. (Cl. 81-55) This invention relates to combination tools and more particularly to a combination tool for assembling and disassembling a plurality of rotatably engaged work s. ifie invention is primarily directed to a combination tool for use in servicing oil burner nozzle assemblies which comprise a nozzle body having a tool engagmg surface, a nozzle having a similar tool engagmg surtace and a core threadedly received within the nozzle and having a slot for engagement by a bladed tool such as a screw driver.

Prior to the present invention there was no satisfactory tool for quickly and safely disassembling the constituent elements of an oil burner nozzle assembly without damage to the fuel lines or injury to the service man. Since the nozzle body is connected directly to the fuel lme 1t was possible to restrain rotation of this element with an open end wrench while the nozzle itself was removed by a socket wrench. However, the procedure involved several obvious disadvantages. Conventional open end wrenches tend to slip, particularly when the nozzle body was coated with oil and, furthermore, the limited grip eifected by such wrenches caused barring of the edges of the cooperating surfaces of the parts. in addition, the pressures exerted by separate wrenches held in the customary manner was likely to be uneven resulting in possible dlstortlon and rupture of the fuel line. Subsequent removal of the core frdm the nozzle presented a further difliculty because, in using a conventional screw driver, the nozzle had to be held by the service man with a separate wrench, which was an awkward operation and likely to lead to serious injury if the screw driver were to slip. Moreover, removal of the nozzle from the wrench was often difficult because of the presence of accumulated foreign matter.

With the foregoing in mind a principal object of the invention is to provide a combination tool by means of which an oil burner nozzle assembly may be expeditiously and safely assembled or disassembled.

Another object of the invention is to provide a tool of the stated type in which the nozzle body and nozzle of an oil burner may be securely grasped and rotated with respect to one another, in which integral means are provided for engaging the slot of the core and rotating it with respect to the nozzle, and in which means are provided for ejecting the nozzle from the tool.

A further object of the invention is to provide a device of the mentioned character wherein work pieces of varying lengths may be effectively assembled and disassembled as required.

Other and further objects, advantages and features of the present invention will be apparent to those skilled in the art from the following description, taken in conjunction with the accompanying drawing in which:

Fig. 1 is an elevational view, partly in section, of a combination tool made in accordance with the present invention;

Fig. 2 is a side elevational view of a nozzle assembly with which the tool of the present invention is used;

States Patent Fig. 3 is an elevational view of the nozzle body of the nozzle assembly of Fig. 2;

Fig. 4- is a vertical sectional view of the nozzle of Fig. 2 showing the core in operative position;

Fig. 5 is an elevational view, in section, of the core engaging means of the present invention shown in the posi tion it assumes when the nozzle is ejected;

Fig. 6 is an end view, in section, taken substantially on the line 6-6 of Fig. 1;

Fig. 7 is an end view, in section, taken substantially on the line 7-7 of Fig. l; and

Fig. 8 is an end sectional view taken substantially on line 8-3 of Fig. 1.

With reference to the drawing and more particularly to Fig. l the combination too]. of the present invention includes a first sleeve it) having a socket 11 opening into one end for engaging a nozzle body A for which purpose the internal surface of the socket is provided with twelve splines 2d of well-known form for engaging the hexagonal nut faces of the part (Fig. 6). A cylindrical bore 12 opens into the other end of the sleeve Ill and terminates at an internal head 13 which separates the same from the socket ll. Adjacent the end into which the bore 12 opens there is provided a radially positioned circular aperture 1 5. A collar 15 is mounted at the upper end of the sleeve ill and is provided with a flange to which normally abuts the edge 17 of the sleeve 10. The bore 2% defined by the flange 1.6 is at least as large as the bore 12. A threaded aperture 18 coaxial with the bore 14 is formed in the collar ltd for reception of an elongated handle 19 which is provided with a pilot 22 extending through the aperture 14 and protruding into the bore 12 for a purpose hereinafter described.

According to the present invention means are provided for simultaneously grasping a pair of work pieces so that assembly and disassembly thereof may readily be effected. in the present instance, a second sleeve 23 is slidably and rotatably received in the bore 12, and is provided at one end thereof with a socket 24 for grasping a nozzle B and for which purpose it is provided with splines 21 (Fig. '7) for grasping the tool engaging surfaces of the nozzle B. Opening into the opposite end of the second sleeve 23 is a bore 25 which forms, in conjunction with the socket 2 5, a shoulder 26. Bore 25 receives an enlargement forming the end of an L-shaped handle 28, the shorter leg 29 of which is held with respect to the sleeve 23 by a set screw 32.

According to another important aspect of the present invention sleeve 23 is slidable axially in the bore 12 to accommodate work pieces of varying lengths. For in stance, in the event that it is necessary to service a nozzle assembly in which the nozzle body A is longer than normal and/ or which may have tool engaging surfaces oifset with respect to the mid-transverse plane so that the longer portion extends into the bore 12, the sleeve 23 may be slid in the bore until it is stopped by the pilot 22. In its excursion in the other direction movement is limited by the bead 13.

The present invention contemplates the provision of integrally mounted means for separating a core C from the nozzle B. Such means is mounted on the free end of the longer leg 36 of the lever arm 23. Referring more particularly to Figs. 1 and 5, the leg 36 is provided with a reduced portion 30 defining a shoulder 37. The extreme end of the leg 36 is formed as a blade 38 for reception in the slot 39 in the core C. A sleeve 42 is slidably supported on the arm 36 and has an internal peripheral flange 43 to receive the portion 30. A third sleeve 45 is secured to the sleeve 42 by a stud 46 which is threaded at 47 for reception in a correspondingly threaded aperture 43 in the sleeve 45. The inner end of the stud 46 is received in a countersink 49' in the sleeve 42 so that relative rotation between these members is prevented. The outer'end of the stud46- is knurled at 52 for easy grasping for rotation of the sleeve 45 rela tive to the portion 36 with the result that the core C may be removed from the nozzle B, while the latter is' restrained in the suitably splined socket 53 opening into the outer end of the sleeve 45. The parts 42 and 45 are maintained in the normal position shown in Fig. l by means'of a-compression spring 54 which urges the parts against a retainer 55, e. g., a split washer.

In using the combination tool of the present invention for disassembling an oil burner nozzle unit (Fig. 2), the sleeve is first slipped over the nozzle body A until the tool engaging surfaces-are gripped by the splines 21. Then the cylinder 23 is manipulated by the handle '28 until the nozzle B is received in the socket 24. The'handle 19 is then firmly held by the operator while the handle 28 is rotated in a counterclockwise direction, as viewed from the top in Fig. 1. The parts A and B are thus separated and the tool with its therein held part B may be moved away from-the part A. Part B may then be extractedand placed in the sleeve 45, where it is adjusted so that the blade 38 is received in the slot 39. The operator then grasps-the stud 46 and rotates the cylinder 45 in a counterclockwise direction as viewed from the right in Fig. 1. This rotation disengages the core C from the nozzle B, and the nozzle B is consequently urged to the right, When separation of these elements has been completed, the core and nozzle are ejected from the cylinder 45 when the operator moves the parts 42 and 45 to the left and compresses the spring 54.

While I have shown a particular embodiment of my invention, it will be understood, of course, that I do not wish to belimited thereto since many modifications may be made and I therefore contemplate by the appended claims to cover any such modifications as fall within the true spirit and scope of my invention.

I claim:

1. A combination tool for separating rotatably engaged work pieces comprising a first sleeve having a splined' socket for engaging one of the Work pieces interiorly of one end thereof, an elongated bore opening into the other end of said sleeve and communicating with said socket, a bead interiorly of the sleeve separating said socket and bore, a second sleeve slidably received in said bore for rotational and axial movement with respect to said bore within-predetermined limits, said second sleeve having a splined socket opening into one end thereof and communicating with the socket of said first sleeve, a collar mounted-on said first sleevein adjacent relation to said other end thereof to provide a peripheral enlargement thereof and having an internal flange abutting said other end, said flange defining an opening at least as large in diameter as said bore, said first sleeve and collar having a radially-directed common aperture communicating with said bore, an elongated handle secured in said common apertureand projecting into said bore to limit movement of said second sleeve, and an L-shaped lever arm having one said sleeves.

2. A combination tool for separating rotatably engaged work pieces comprising a first sleeve having splines for engaging one of the work pieces interiorly of one end thereof, an elongated bore opening into the other end of said sleeve and communicating vwith said socket, a second sleeve, slidably mounted in said bore for rotational and axial movement with'respect thereto,-said second sleeve having a socket openinginto one end thereof for engaging the other of the work pieces and communicating with the socketof said first sleeve,said first sleeve having a radial aperture adjacent said other end thereof, a collar mounted on said first sleeve adjacent said other end thereof, said collar and first sleeve having a common radially-directed opening, an elongated handle received in said opening and protruding into said bore to limit axial movement of said-second sleeve, an L-shaped handle having one leg secured to said second sleeve for rotation thereof and the other leg extending in substantial parallelism with said first handle.

3. A combination tool'for separating a pair of threadedly'engaged work pieces each having a polygonal portion for engagement by a tool comprising a first sleeve having a socket conforming to the tool-engaging portion of one work piece at one end of the sleeve and a coaxial smooth bore at the other end thereof, said socket and bore being in communication, a projection interiorly of said sleeve and between said socket and bore, a second sleeve having a socket conforming to the tool-engaging portion of the other work piece, said second sleeve being slidably received in said bore for rotational and axial movement-relatively thereto, a first handle for said first sleeve including a threaded part at one end, said first sleeve having a threaded apertnre for reception of said threaded partand the relative dimensions of said first sleeve and-threaded part being such as to cause a portion of said end ofsaid handle to protmde into the interior of the sleeve to prevent dislodgment of said second sleeve from saidibore andisaid handle, when unscrewed, permitting separation of'said sleeves, and a handle for said second sleeve. 

